ffmpeg.py 文件源码

def get_exe():
    """ Get ffmpeg exe
    """
    # Is the ffmpeg exe overridden?
    exe = os.getenv('IMAGEIO_FFMPEG_EXE', None)
    if exe:  # pragma: no cover
        return exe

    plat = get_platform()

    if plat and plat in FNAME_PER_PLATFORM:
        try:
            exe = get_remote_file('ffmpeg/' + FNAME_PER_PLATFORM[plat])
            os.chmod(exe, os.stat(exe).st_mode | stat.S_IEXEC)  # executable
            return exe
        except InternetNotAllowedError:
            pass  # explicitly disallowed by user
        except OSError as err:  # pragma: no cover
            logging.warning("Warning: could not find imageio's "
                            "ffmpeg executable:\n%s" %
                            str(err))

    # Fallback, let's hope the system has ffmpeg
    return 'ffmpeg'


# Get camera format